1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexus [3.1K]
2 years ago
8

(3x-5) (7x+5) find x

Mathematics
1 answer:
jeka942 years ago
6 0

Answer:

I

Step-by-step explanation:

3x-5+7x+5+90=180

x=9

You might be interested in
What is the product in simplest form −6/11⋅3/4
vesna_86 [32]
-6/11•3/4= -9/22 !!!!!
7 0
2 years ago
Read 2 more answers
PLEASE HELP WILL MARK BRAINLIEST
Sholpan [36]

Answer: Choice D

b greater-than 3 and StartFraction 2 over 15 EndFraction

In other words,

b > 3 & 2/15

or

b > 3\frac{2}{15}\\\\

========================================================

Explanation:

Let's convert the mixed number 2 & 3/5 into an improper fraction.

We'll use the rule

a & b/c = (a*c + b)/c

In this case, a = 2, b = 3, c = 5

So,

a & b/c = (a*c + b)/c

2 & 3/5 = (2*5 + 3)/5

2 & 3/5 = (10 + 3)/5

2 & 3/5 = 13/5

The inequality 2 \frac{3}{5} < b - \frac{8}{15}\\\\ is the same as \frac{13}{5} < b - \frac{8}{15}\\\\

---------------------

Let's multiply both sides by 15 to clear out the fractions

\frac{13}{5} < b - \frac{8}{15}\\\\15*\frac{13}{5} < 15*\left(b - \frac{8}{15}\right)\\\\39 < 15b-8\\\\

---------------------

Now isolate the variable b

39 < 15b-8\\\\15b-8 > 39\\\\15b > 39+8\\\\15b > 47\\\\b > \frac{47}{15}\\\\b > \frac{45+2}{15}\\\\b > \frac{45}{15}+\frac{2}{15}\\\\b > 3+\frac{2}{15}\\\\b > 3\frac{2}{15}\\\\

Side note: Another way to go from 47/15 to 3 & 2/15 is to notice how

47/15 = 3 remainder 2

The 3 is the whole part while 2 helps form the fractional part. The denominator stays at 15 the whole time.

7 0
3 years ago
Simultaneous equations 2x+3y=13 4x-y=-2
Rufina [12.5K]

Answer:

(0.5, 4 )

Step-by-step explanation:

Given the 2 equations

2x + 3y = 13 → (1)

4x - y = - 2 → (2)

Multiplying (2) by 3 and adding to (1) will eliminate the term in y

12x - 3y = - 6 → (3)

Add (1) and (3) term by term to eliminate y

14x = 7 ( divide both sides by 14 )

x = 0.5

Substitute x = 0.5 into either of the 2 equations and evaluate for y

Substituting into (1)

2(0.5) + 3y = 13

1 + 3y = 13 ( subtract 1 from both sides )

3y = 12 ( divide both sides by 3 )

y = 4

Solution is (0.5, 4 )

3 0
3 years ago
Alice purchased 4 1⁄2 kilograms of olive oil for $27. What is the price per kilogram?
vitfil [10]

Hi!

We will solve this using ratios, like this:

4 1/2 = 4,5 kg of olive oil for 27 $

1 kg of olive oil for x $

_____________________________

x = (27*1)/4,5

x = 27/4,5

x = 6 $ per kilogram

Hope this helps!

8 0
3 years ago
1,2,3
Darya [45]
1. scalene
2. rectangle or parallelogram
3. right triangle
8 0
3 years ago
Read 2 more answers
Other questions:
  • 1.) Six people share 3/5 pound of peanuts equally. What fraction of a pound of peanuts does each person receive? There aren't an
    15·1 answer
  • Write a real world problem that could be represented by the expression -5×4
    10·2 answers
  • Help due Monday......
    13·1 answer
  • At a certain game at a school carnival, people won 42 small prizes and 18 large prizes. For every _____ small prizes won, there
    5·1 answer
  • How do you use proofs to show that triangles are congruent
    13·1 answer
  • Could anyone help me on this question?
    12·1 answer
  • All you need is in the photo
    10·1 answer
  • What does x equal 7(2x+5)=4x -9 -x <br> PLEASEEEE HELPPPP ME
    12·1 answer
  • Leandre scored 10 points less than 3 times the number of points that Rayanna scored. Leandre scored 11 points. How many points d
    11·2 answers
  • What is the answer for 2/3 + 1/4?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!